English verb conjugation
MUST WHACK

Regular verb: whack - whacked - whacked

Affirmation

Simple form	V-ing form
I must whack you must whack she must whack we must whack you must whack they must whack	I must be whacking you must be whacking she must be whacking we must be whacking you must be whacking they must be whacking
Perfect	V-ing perfect
I must have whacked you must have whacked she must have whacked we must have whacked you must have whacked they must have whacked	I must have been whacking you must have been whacking she must have been whacking we must have been whacking you must have been whacking they must have been whacking

Negation

Simple form	V-ing form
I must not whack you must not whack she must not whack we must not whack you must not whack they must not whack	I must not be whacking you must not be whacking she must not be whacking we must not be whacking you must not be whacking they must not be whacking
Perfect	V-ing perfect
I must not have whacked you must not have whacked she must not have whacked we must not have whacked you must not have whacked they must not have whacked	I must not have been whacking you must not have been whacking she must not have been whacking we must not have been whacking you must not have been whacking they must not have been whacking

Interrogative form

Simple form	V-ing form
must I whack? must you whack? must she whack? must we whack? must you whack? must they whack?	must I be whacking? must you be whacking? must she be whacking? must we be whacking? must you be whacking? must they be whacking?
Perfect	V-ing perfect
must I have whacked? must you have whacked? must she have whacked? must we have whacked? must you have whacked? must they have whacked?	must I have been whacking? must you have been whacking? must she have been whacking? must we have been whacking? must you have been whacking? must they have been whacking?

Interro-negative form

Simple form	V-ing form
must I not whack? must you not whack? must she not whack? must we not whack? must you not whack? must they not whack?	must I not be whacking? must you not be whacking? must she not be whacking? must we not be whacking? must you not be whacking? must they not be whacking?
Perfect	V-ing perfect
must I not have whacked? must you not have whacked? must she not have whacked? must we not have whacked? must you not have whacked? must they not have whacked?	must I not have been whacking? must you not have been whacking? must she not have been whacking? must we not have been whacking? must you not have been whacking? must they not have been whacking?